The World

A top official of South Africa's largest anti-apartheid group has been seized by the government after operating underground for about two years, members of the movement said. They said that Mohammed Valli, acting general secretary of the multiracial United Democratic Front, was detained in Johannesburg under the government's emergency powers. Valli has held the post since his predecessor, Popo Molefe, was arrested on treason charges with 21 other activists in 1985.